A 49-year-old man was found motionless at the bottom of Lake Pleasant by scuba diving partner, authorities said.
Peoria Fire Department spokesman Tom Pendley said the men were diving about 15 feet below the water.
Fellow divers attempted to rescue him while others called 911. When they pulled the man from the lake, he was not breathing Pendley said.
An off-duty paramedic administered CPR and resuscitated the man and before he was airlifted to John C. Lincoln hospital, he said.